Officers are investigating after a man tried to rob Morrisons on Gloucester Street at knife-point.
It happened at around 10pm on Friday 24th January as staff were closing the shop for the night.
No one was hurt, and the man got away empty-handed after shop staff locked themselves in a back office.
Jersey Police are now trying to identify the man and a car seen in the area at the time.
A black or dark blue Mercedes - possibly a C Class - was seen heading towards St Helier on CCTV.
It was first seen at 21:45pm at the West Park roundabout, heading towards Cheapside.
The vehicle then drove down The Parade, past the hospital and parking up on Gloucester Street for around 20 minutes, then left heading west along Victoria Avenue.
The driver of the car, anyone who saw it, or has private CCTV or dash-cam footage of it - is asked to contact Jersey Police on 01534 612612 or Crimestoppers anonymously.

Phone robber jailed after targeting a 'lone' woman
Channel Islands' parliamentary Standards Commissioner resigns
Island Energy charged over Mont Pinel gas explosion
Jersey airport to open early due to broken scanner
Critically endangered species of lemur joins Jersey Zoo
Lido to 'pause trading' amid ongoing uncertainly
Ports of Jersey applies to remove Gorey Pier landing stage
Jersey's police officers to be held to new standards
Comments
Add a comment